CN108331894A - A kind of stroke and the adjustable straight-line motion mechanism of slope and its control method - Google Patents
A kind of stroke and the adjustable straight-line motion mechanism of slope and its control method Download PDFInfo
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- CN108331894A CN108331894A CN201810280784.6A CN201810280784A CN108331894A CN 108331894 A CN108331894 A CN 108331894A CN 201810280784 A CN201810280784 A CN 201810280784A CN 108331894 A CN108331894 A CN 108331894A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
Abstract
A kind of stroke and the adjustable straight-line motion mechanism of slope and its control method, belong to motion technical field, are collectively constituted by straight-line motion mechanism and regulating mechanism；Straight-line motion mechanism is made of worm gear, moving slide block, movable connecting rod and linear motion motor outside movement output connecting rod, movement crank, moving crankshaft, movement external gear, internal gear；Regulating mechanism is made of worm gear, movement external gear, stroke adjustment handwheel, the left flange of worm screw, the right flange of worm screw and Traffic control system motor outside movement travel adjusting worm screw, internal gear；Structure of the invention is novel, control method is clearly feasible, forms the initial position of linear reciprocating motion and can be adjusted according to actual needs, without cross component force in the mechanism operational process, sliding block is made, without side friction resistance exercise, to improve service life and the stability of kinematic pair in planar contact pair in this way；Though manufacturing cost increased, applied widely, function cost performance is enhanced.
Description
Technical field
The invention belongs to motion technical field, it is related to a kind of straight-line motion mechanism and its control method, specifically
It is to be related to a kind of stroke and the adjustable straight-line motion mechanism of slope and its control method.
Background technology
The system that mechanism is made of component has determining mechanical movement, it can be used for transmitting and converting motion.Directly
Line movement mechanism is so that certain point on component is made accurate or approximate straight line motion mechanism, therefore can be divided into accurate straight-line motion mechanism
With two class of approximate straight line motion mechanism；Precise linear mechanism can replace guide groove and slide bar, due to unique during the motion
Loss source is the pivoting friction at hinged place, and the length to rub is very short, so comparing guide groove and slide bar, frictional dissipation wants small
Very much.Classical accurate straight-line motion mechanism has Bo Sailiye-Li Pujin straight-line motion mechanisms and Sa Lusi straight-line motion mechanisms.
Though approximate straight line motion mechanism can substitute slide bar and guide groove, in the application, it is straight line to need one section, and another section is bent
Line.There are watt approximate straight line motion mechanism and Huo Ken straight-line motion mechanisms in classical approximate straight line motion mechanism.
Straight-line motion mechanism has following features：(1) simple in structure, manufacture is easy, reliable operation, is driven distance farther out,
It is larger, it can be achieved that quick return rule to transmit load, but is not easy to obtain uniform motion or any other characteristics of motion, transmission efficiency
Relatively low, transmission is unstable, and impact and vibration are larger；(2) rotation and linear movement can be achieved, stable drive noiseless is exchanged；It is sliding
Dynamic spiral can make self-locking screw mechanism；Operating rate is generally very low, is only applicable to small-power transmission；(3) manufacture and install essence
Spend more demanding, rotational noise is larger when precision is low, No-mistake Principle protective effect；Helical gears mechanism kinematic is steady, carrying
Ability is strong, but will produce axial force in transmission, when in use must installed thrust bearing or angular contact bearing；(4) distance between axles
From larger, stable working noiseless, absorbing can be buffered, frictional V belt translation has overload protective function；It is simple in structure, installation requirement
Not high, contour dimension is larger；The flexible sliding of frictional V belt translation, it is impossible to be used in indexing system；Friction easily electrification, should not be used in
Inflammable and explosive occasion；Axis and shaft strength are larger, and transmission tape lifetime is shorter；(5) axial distance is larger, and average ratios are normal
It counts, the oil film formed between chain elements has vibration absorption ability, has stronger adaptability, reliable operation, axis to upload adverse circumstances
Lotus is smaller；Instantaneous running speed is uneven, be not as steady as V belt translation when high speed；It is easily caused after being extended because of abrasion when chain works
Resonance, need to generally add tensioning and vibration absorber.
In actual machine, the common mechanism mutually converted between rotary motion and linear motion is crank block respectively
Mechanism, cam mechanism, rack and pinion mechanism and ball screw framework.
Between four components connected by revolute pair in common four-bar mechanism, realize curve and curvilinear motion it
Between conversion, and slider-crank mechanism is to retain toggle-action lever, intermediate bar and fixed link (rack), another bar is degenerated to slide
Block makes sliding block be connect with intermediate connecting rod with revolute pair, and sliding block is connect with fixed link with prismatic pair, thereby realizes crank end
The linear motion of rotary motion and slider end mutually converts.Application of the slider-crank mechanism in machinery is very extensive, for example, internal combustion
Interior energy is converted to the mechanical energy of crank rotation by reciprocating motion of the pistons by machine；Turned by the continuous of crank in press structure
Dynamic, through connecting rod band movable slider realizes pressurization；In shaping machine main motion mechanism, guide rod drives ram to do around a spot wobble
It moves back and forth, realizes planing；In water pumper structure, when swinging handle, under the bearing of connecting rod, piston rod is at cylinder (fixed sliding block)
It inside moves up and down, to reach purpose of drawing water.In addition, thread rolling machine, automatic feeding and self-unloading bucket-tipping device etc. in engineering
Slider-crank mechanism is all used in machinery.The advantages of slider-crank mechanism is low secondary connection, and kinematic pair unit area stress is small, just
In lubrication, abrasion is small；The control of long range can also be realized；Movement between component is maintained by geometry closing, specific force
It is closed reliable.But slider-crank mechanism structure design is more complex, and big to the sensibility of manufacture installation；It will cause very when high speed
Big vibration and dynamic loading.
Cam mechanism is made of three cam, driven member and rack parts, and wherein cam is driving link, the fortune of driven member
Dynamic rule is determined by the profile of cam.Cam is the component for having curved profile or groove, if driven member is mobile member, then
Such cam mechanism just can realize the conversion of rotary motion, linear motion.The valve actuating mechanism of internal combustion engine is exactly that cam mechanism is answered
Representative instance, cam mechanism can be used for the occasion to driven member arbitrary motion disciplinarian request；It can be acted with high-speed starting
Accurately and reliably, simple and compact for structure；To put or line contacts, pressure is high on unit area, it is difficult to keep good for cam and driven member
Lubrication, it is easy to wear；But cam face is complicated, and processing repair is more difficult.
Rack pinion is to use a kind of relatively broad driving form, it can realize the rotary motion and rack of gear
Linear motion between conversion, the transmission of this form has many good qualities, and especially on many heavy duty machine tools, utilizes this shape
The transmission of formula very easily just obtains high-speed straight-line movement, and can not produced respectively with us according to lathe various aspects
The rack of kind material so that rigidity and mechanical efficiency greatly improve.But the stationarity of this driving form is to rely on rack and tooth
Precision is taken turns, if precision is not high enough, lathe just has certain error when processing other parts.So if it is intended to eliminating
The error of this kind of part, or its running noise in lathe is made to reduce it is necessary to which the required precision to rack and pinion is continuously improved,
And increase wearability and heat resistance in material.
Patent No. CN01240083.1 utility model patents propose a kind of no bent axle long-stroke piston internal combustion engine, the patent
It is middle to replace bent axle with transmission shaft head bore output device, it is limited without bent axle pivot angle, cylinder, piston stroke are according to thermal efficiency need
It wants, arbitrarily can rationally lengthen；Patent No. CN1520373237.4 utility models, which propose one kind, can be changed into linear motion rotation
The dynamic gear-box of transhipment, the patent are to realize the conversion of linear motion and rotary motion using rack, gear-driven principle；
Patent No. CN201510149575.4 patents of invention propose a kind of linear motion device of integrated mode, by side in the patent
Plate, the linear guide, motor, shaft coupling, fixed end bearing block, support end bearing block, nut, ball-screw and slide unit composition, it is real
The conversion of existing rotary motion and linear motion；Patent No. CN201410280856.9 patents of invention propose a kind of reciprocating linear fortune
It is dynamic to realize movement conversion around fixed rotating shaft using transmission chain in patent with circular motion conversion equipment, the movement it is accurate
Property existing defects；It is back and forth straight that patent No. CN99202004.2 utility model patents propose a kind of hypocycloid of route-variable
Line telecontrol equipment, the path of realization are will to determine circle internal gear to be fixed on pedestal, and moving-coil external gear is mounted in the T in bearing block axis hole
On the bent axle of profile shaft transverse arm, driving wheel is mounted on T-type axis transverse arm, and symmetrical with moving-coil external gear, adjustable crank is movably arranged on
The pendulum for being sleeved on adjustable crank is cut in movable displacement on the spoke of dynamic Knucle-gear, the centre that square frame-shaped sliding hanging plate is placed in rail plate
Moving axis is put on, and working beam is driven to do reciprocating linear motion.Realization is can be seen that from existing patent of invention, utility model patent
Rotary motion has different paths from the switching mechanism of linear motion, but is coordinated by certain kinematic pair to realize.
Not yet there is the combined mechanism of gear drive and toggle realize that convert rotational motion is in line movement and stroke can
The motion of control.
Invention content
The present invention can realize quick return rule for existing straight-line motion mechanism, but cannot obtain uniform motion pattern,
It is driven unstable, impact and vibrates larger, the deficiencies of impulse stroke cannot be finely adjusted according to demand, propose a kind of stroke and oblique
The adjustable straight-line motion mechanism of rate and its control method can effectively solve deficiency present in above-mentioned technology, can be further
Meet straight-line motion mechanism special occasions use demand.
Technical scheme of the present invention：A kind of stroke and the adjustable straight-line motion mechanism of slope, including left shell and the right side
Shell, the left shell and right shell body are connected by interior hexagonal flower-shape fillister head screw；It is characterized in that：The stroke and tiltedly
The adjustable straight-line motion mechanism of rate is also collectively constituted by straight-line motion mechanism and regulating mechanism；
The straight-line motion mechanism by movement output connecting rod, movement crank, moving crankshaft, movement external gear, worm gear outside internal gear,
Moving slide block, movable connecting rod and linear motion motor are constituted；The outer worm gear of the internal gear is connected by angular contact ball bearing to be arranged
In the right shell body, the center of the worm gear outside the internal gear is arranged by angular contact ball bearing for the moving crankshaft, described
The output shaft of the input terminal of moving crankshaft and the linear motion motor, which is formed, to be drivingly connected, and the movement external gear is arranged in institute
It states on the output end of moving crankshaft, the movement crank is arranged in the center of the movement external gear, the movement output connecting rod
It is arranged in the bottom of the movement crank, one end of the movable connecting rod is connected with the movement output connecting rod, the other end and institute
Moving slide block is stated to be connected；
The regulating mechanism is by worm gear, movement external gear, stroke adjustment handwheel, worm screw outside movement travel adjusting worm screw, internal gear
The right flange of left flange, worm screw and Traffic control system motor are constituted；The movement travel adjusts worm screw and is passed with the outer worm gear of the internal gear
The angular contact ball bearing connection that passes on left of dynamic connection, the stroke adjustment worm screw is arranged on shell, the left flange of worm screw
It is arranged in the outside of the angular contact ball bearing by sunk screw, the stroke adjustment handwheel is arranged in the movement travel tune
It saves the left part of worm screw and is fixed by big fillister head screw, the movement travel is adjusted passes through angle on the right side of worm screw
Contact ball bearing connection is arranged on shell, and the right flange of worm screw is arranged by sunk screw in the angular contact ball bearing
The output shaft in outside, the Traffic control system motor is connected with the right part of movement travel adjusting worm screw.
It is equipped with radial needle roller and retainer component between the movement output connecting rod and movement crank, makes movement output connecting rod
Relative motion crank shape circumferentially rotates, and movement output connecting rod forms axis by the major circle of a sphere chapiter screw of slotting with movement crank
To limit fix.
The movement crank is arranged at the center of movement external gear, and passes through turret head band slot bolt, plain washer and light-duty
Spring washer is connected and fixed with moving crankshaft.
The distance of shaft centers of the movement crank is equal with the movement pitch radius of external gear.
The angular contact ball bearing, angular contact ball bearing, angular contact ball bearing and angular contact ball bearing are pairs of structure
It uses, bearing spacer is equipped between each pair of angular contact ball bearing, set on the outer worm gear shaft of the internal gear where angular contact ball bearing
There is axis check ring, the hole wall of the outer worm gear of the internal gear where angular contact ball bearing is equipped with internal circlip.
The pitch diameter of the movement external gear is equal with the outer pitch radius of worm gear of internal gear.
A kind of control method of stroke and the adjustable straight-line motion mechanism of slope, which is characterized in that including controlling as follows
Step processed：
(1) the stroke adjustment handwheel or Traffic control system motor that adjust worm screw both ends in movement travel are set by adjusting, make movement
Stroke adjustment worm screw drives the outer worm gear of internal gear to turn an angle, and keeps the angle constant and realize self-locking；
(2) by changing the initial position of worm gear outside internal gear, keep movement external gear first what is be meshed with worm gear outside internal gear
Beginning meshing point changes, straight by worm gear outside internal gear to change the movement locus of any point on movement external gear pitch circle
The straight line of diameter linear reciprocating motion adjusts slope relative to the gradient of horizontal position, makees reciprocating linear to adjust moving slide block
Movement and its adjustment of position.
(3) virtual to transport by installing the movement crank isometric with external gear pitch radius is moved in moving crankshaft output end
Certain point on dynamic external gear pitch circle, ensures the teeth portion intensity of movement external gear, realizes the movement of certain point on movement external gear pitch circle
Track is the purpose that worm gear horizontal diameter direction moves along a straight line outside internal gear.
(4) in the mechanism operational process moving slide block without cross component force, so that moving slide block is in planar contact pair without side
It is moved to frictional resistance, improves service life and the stability of kinematic pair.
Beneficial effects of the present invention are：The adjustable straight-line motion mechanism of a kind of stroke and slope proposed by the present invention,
Structure novel, control method is clearly feasible, and the movement locus for using any point on movement external gear pitch circle is transported by straight line
The principle of the straight line of the dynamic outer worm gear diameter linear reciprocating motion of internal gear, while being transported using the adjustable worm gear of stroke slope and straight line
The design of part that dynamic internal gear is integrated so that forming the initial position of linear reciprocating motion can be adjusted according to actual needs
It is whole, make the linear motion stroke of sliding block obtain control and adjustment by connecting rod in this way.The mechanism is relative to slider-crank mechanism
Though part constitute it is more, the sliding block of slider-crank mechanism linear motion stroke be it is fixed, and the mechanism be can basis
It needs to carry out manually or control is adjusted；Meanwhile without cross component force in the mechanism operational process, so that sliding block is in plane
Without side friction resistance exercise in pair, service life and the stability of kinematic pair are improved；Though manufacturing cost increased, it is applicable in model
It encloses extensively, enhances function cost performance.
Description of the drawings
Fig. 1 is the whole side structure schematic view of the present invention.
Fig. 2 is the whole main structure diagram of the present invention.
In figure：Fluting the major circle of a sphere chapiter screw 1, radial needle roller and retainer component 2, movement output connecting rod 3, movement are bent
Handle 4, turret head band slot bolt 5, plain washer 6, single coil spring lock washer light type 7, moving crankshaft 8, big gasket 9, angular contact ball bearing 10, axis
Hold spacer ring 11, movement external gear 12, bearing length spacer ring 13, the outer worm gear 14 of internal gear, movement travel adjusting worm screw 15, left shell
16, interior hexagonal flower-shape fillister head screw 17, plain washer 18, single coil spring lock washer light type 19, right shell body 20, angular contact ball bearing 21, axis
Hold spacer ring 22, interior hexagonal flower-shape fillister head screw 23, plain washer 24, single coil spring lock washer light type 25, axis check ring 26, hole bullet
Spring baffle ring 27, angular contact ball bearing 28, linear motion motor 29, big fillister head screw 30, stroke adjustment handwheel 31, the left method of worm screw
Orchid 32, sunk screw 33, angular contact ball bearing 34, Traffic control system motor 35, moving slide block 36, movable connecting rod 37, the right method of worm screw
Orchid 38.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Fig. 1~2, a kind of stroke and the adjustable straight-line motion mechanism of slope, including left shell 16 and right shell body 20,
Also collectively constituted by straight-line motion mechanism and regulating mechanism.
As shown in Fig. 1~2, a kind of stroke and the adjustable straight-line motion mechanism of slope, straight-line motion mechanism is by moving
Export connecting rod 3, movement crank 4, moving crankshaft 8, movement external gear 12, internal gear outer worm gear 14, moving slide block 36, movable connecting rod
37 are constituted with linear motion motor 29；The outer worm gear 14 of internal gear is arranged by the connection of angular contact ball bearing 21 in right shell body 20,
The center of worm gear 14, the input terminal and straight line of moving crankshaft 8 are arranged outside internal gear by angular contact ball bearing 10 for moving crankshaft 8
The output shaft of motion motor 29, which is formed, to be drivingly connected, and movement external gear 12 is arranged on the output end of moving crankshaft 8, moves crank
4 are arranged at the center of movement external gear 12, and movement output connecting rod 3 is arranged in the bottom of movement crank 4, one end of movable connecting rod 37
It is connected with movement output connecting rod 3, the other end is connected with moving slide block 36；
As shown in Fig. 1~2, a kind of stroke and the adjustable straight-line motion mechanism of slope, regulating mechanism are adjusted by movement travel
The outer worm gear 14 of worm screw 15, internal gear, movement external gear 12, stroke adjustment handwheel 31, the left flange 32 of worm screw, right 38 and of flange of worm screw
Traffic control system motor 35 is constituted；Movement travel adjusts worm screw 15 and is sequentially connected with the outer worm gear 14 of internal gear, and movement travel adjusts snail
The connection of angular contact ball bearing 34 that passes on left of bar 15 is arranged on shell, and the left flange 32 of worm screw is arranged by sunk screw 33
The outside of angular contact ball bearing 34, stroke adjustment handwheel 31, which is arranged, to be adjusted the left part of worm screw 15 in movement travel and passes through great circle
Chapiter screw 30 fixes, and the right side that movement travel adjusts worm screw 15 is arranged by the connection of angular contact ball bearing 34 in shell
On body, the right flange 38 of worm screw is arranged by sunk screw 33 in the outside of angular contact ball bearing 34, Traffic control system motor 35 it is defeated
Shaft is connected with the right part of stroke adjustment worm screw 15.
As shown in Fig. 1~2, a kind of stroke and the adjustable straight-line motion mechanism of slope, movement output connecting rod 3 and movement
It is equipped with radial needle roller and retainer component 2 between crank 4, the formation of 3 relative motion crank 4 of movement output connecting rod is made to circumferentially rotate,
Movement output connecting rod 3 forms axial limit with movement crank 4 by the major circle of a sphere chapiter screw 1 of slotting and fixes；Move crank 4
It is arranged at the center of movement external gear 12, and bent by turret head band slot bolt 5, plain washer 6 and single coil spring lock washer light type 7 and movement
Axis 8 is connected and fixed；The distance of shaft centers for moving crank 4 is equal with the movement pitch radius of external gear 12；Angular contact ball bearing 10, corner connection
Touch ball bearing 21, angular contact ball bearing 28 and angular contact ball bearing 34 are that pairs of structure uses, each pair of angular contact ball bearing it
Between be equipped with bearing spacer, the outer worm gear shaft of the internal gear where angular contact ball bearing 21 is equipped with axis check ring 26, corner connection
The hole wall of the outer worm gear of internal gear where touching ball bearing 28 is equipped with internal circlip 27；Move the pitch diameter of external gear 12
It is equal with the pitch radius of worm gear outside internal gear 14.
As shown in Fig. 1~2, a kind of stroke and the adjustable straight-line motion mechanism of slope, due to will be in movement external gear
One straight pin is installed again, it is to have to drive 3 drive motion sliding block 36 of movement output connecting rod to do reciprocating linear motion on 12 node
Certain difficulty, in order to ensure the intensity of gear tooth, while certain torque can be transmitted again, it is necessary to select the tooth of large modulus
Wheel does internal-external gear, and the volume of such movement conversion mechanism will be very huge.For this purpose, the left axle end by means of moving crankshaft 8 is stretched
Go out part, a movement crank 4 is connected firmly by spline (or square structure), the distance of shaft centers of movement crank 4 is equal to movement external gear
12 pitch radius.A pitch radius is namely virtually made, realizes the function for transmitting movement and torque.
As shown in Fig. 1~2, a kind of control method of stroke and the adjustable straight-line motion mechanism of slope, including it is as follows
Rate-determining steps：
(1) stroke adjustment handwheel 31 or Traffic control system motor 35 that 15 both ends of worm screw are adjusted in movement travel are set by adjusting,
Make movement travel adjusting worm screw 15 that worm gear 14 outside internal gear be driven to turn an angle, and keeps the angle constant and realize certainly
Lock；
(2) by changing the initial position of worm gear 14 outside internal gear, movement external gear 12 is made to be nibbled with 14 phase of worm gear outside internal gear
The initial engagement point of conjunction changes, and to change the movement locus of any point on movement 12 pitch circle of external gear, passes through internal gear
The straight line of 14 diameter linear reciprocating motion of outer worm gear adjusts slope relative to the gradient of horizontal position, to adjust moving slide block
36 do reciprocating linear motion and its position.
(3) empty by installing the movement crank 4 isometric with external gear 12 radiuses of pitch circle are moved in 8 output end of moving crankshaft
Certain point on quasi- movement 12 pitch circle of external gear, ensures the teeth portion intensity of movement external gear 12, realizes on movement 12 pitch circle of external gear
The movement locus of certain point is the purpose that 14 horizontal diameter direction of worm gear moves along a straight line outside internal gear.
(4) in the mechanism operational process moving slide block 36 without cross component force, so that moving slide block nothing in planar contact pair
Side friction resistance exercise improves service life and the stability of kinematic pair.
Embodiment
The relevant parameter of stroke and the adjustable straight-line motion mechanism of slope is as follows：
(1) it is to ensure that the intensity, rigidity, meshing quality of gear drive are high, small, gear-driven structural parameters selection
For：The master gear transmission of modulus 2, the internal gear number of teeth 50, the external gear number of teeth 25.
(2) change the slope executing agency of linear motion stroke：The worm gear number of teeth 60, modulus 2, number of threads 1, manually or from
It is dynamic to adjust；After adjusting, worm gear mechanism is in self-locking state.
(3) slope adjusting range：0 °~90 °.
(4) it is that toggle is made to have enough rigidity and intensity, most suitable connecting rod under the premise of mechanism is light and handy
Length, throw of crankshaft and structural parameters are selected as：Length of connecting rod 180mm, throw of crankshaft 25mm, structural parameters 0.2778.
(5) virtual crank length 25mm.
(6) the sliding block minimax stroke after the adjustment of slope adjustment mechanism：0~50mm.
Claims (7)
1. the adjustable straight-line motion mechanism of a kind of stroke and slope, including left shell (16) and right shell body (20), the left side
Shell (16) is connected with right shell body (20) by interior hexagonal flower-shape fillister head screw (17)；It is characterized in that：The stroke and
The adjustable straight-line motion mechanism of slope is also collectively constituted by straight-line motion mechanism and regulating mechanism；
The straight-line motion mechanism by movement output connecting rod (3), movement crank (4), moving crankshaft (8), movement external gear (12),
The outer worm gear (14) of internal gear, moving slide block (36), movable connecting rod (37) and linear motion motor (29) are constituted；Outside the internal gear
For worm gear (14) by angular contact ball bearing (21) connection setting in the right shell body (20), the moving crankshaft (8) passes through angle
Contact ball bearing (10) be arranged outside the internal gear worm gear (14) center, the input terminal of the moving crankshaft (8) with it is described
The output shaft of linear motion motor (29), which is formed, to be drivingly connected, and the movement external gear (12) is arranged in the moving crankshaft (8)
Output end on, it is described movement crank (4) be arranged it is described movement external gear (12) center, the movement output connecting rod (3)
It is arranged in the bottom of the movement crank (4), one end of the movable connecting rod (37) is connected with the movement output connecting rod (3),
The other end is connected with the moving slide block (36)；
The regulating mechanism adjusts the outer worm gear (14) of worm screw (15), internal gear, movement external gear (12), stroke tune by movement travel
Handwheel (31), the left flange of worm screw (32), the right flange of worm screw (38) and Traffic control system motor (35) is saved to constitute；The movement travel tune
It saves worm screw (15) to be sequentially connected with the outer worm gear (14) of the internal gear, the stroke adjustment worm screw (15) passes on left angular contact
Ball bearing (34) connection is arranged on shell, and the left flange of worm screw (32) is arranged by sunk screw (33) in the angular contact
The outside of ball bearing (34), stroke adjustment handwheel (31) setting adjust the left part of worm screw (15) simultaneously in the movement travel
It is fixed by big fillister head screw (30), the right side that the movement travel adjusts worm screw (15) passes through angular contact ball axis
It holds (34) connection to be arranged on shell, the right flange of worm screw (38) is arranged by sunk screw (33) in the angular contact ball axis
The outside of (34) is held, the output shaft of the Traffic control system motor (35) adjusts the right part phase of worm screw (15) with the movement travel
Connection.
2. a kind of stroke according to claim 1 and the adjustable straight-line motion mechanism of slope, it is characterised in that：It is described
It is equipped with radial needle roller and retainer component (2) between movement output connecting rod (3) and movement crank (4), makes movement output connecting rod (3)
Relative motion crank (4) formation circumferentially rotates, and movement output connecting rod (3) passes through the major circle of a sphere chapiter screw (1) and the movement of slotting
Crank (4) forms axial limit and fixes.
3. a kind of stroke according to claim 1 and the adjustable straight-line motion mechanism of slope, it is characterised in that：It is described
It moves crank (4) to be arranged at the center of movement external gear (12), and passes through turret head band slot bolt (5), plain washer (6) and light-duty
Spring washer (7) is connected and fixed with moving crankshaft (8).
4. a kind of stroke according to claim 1 and the adjustable straight-line motion mechanism of slope, it is characterised in that：It is described
The distance of shaft centers for moving crank (4) is equal with the pitch radius of movement external gear (12).
5. a kind of stroke according to claim 1 and the adjustable straight-line motion mechanism of slope, it is characterised in that：It is described
Angular contact ball bearing (10), angular contact ball bearing (21), angular contact ball bearing (28) and angular contact ball bearing (34) are pairs of
Structure uses, and bearing spacer is equipped between each pair of angular contact ball bearing, the outer snail of the internal gear where angular contact ball bearing (21)
Wheel shaft is equipped with axis with check ring (26), and the hole wall of the outer worm gear of internal gear where angular contact ball bearing (28) is used equipped with hole
Check ring (27).
6. a kind of stroke according to claim 1 and the adjustable straight-line motion mechanism of slope, it is characterised in that：It is described
The pitch diameter for moving external gear (12) is equal with the outer pitch radius of worm gear (14) of internal gear.
7. a kind of control method of the adjustable straight-line motion mechanism of stroke and slope, which is characterized in that use claim
1-6 any one of them stroke and the adjustable straight-line motion mechanism of slope, including step control as follows：
(1) stroke adjustment handwheel (31) or Traffic control system motor that worm screw (15) both ends are adjusted in movement travel are set by adjusting
(35), so that movement travel is adjusted worm screw (15) drives the outer worm gear (14) of internal gear to turn an angle, and keeps the angle constant
With realization self-locking；
(2) by change internal gear outside worm gear (14) initial position, make movement external gear (12) with worm gear outside internal gear
(14) the initial engagement point being meshed changes, to change the movement locus of any point on movement external gear (12) pitch circle,
Slope is adjusted relative to the gradient of horizontal position by the straight line of worm gear outside internal gear (14) diameter linear reciprocating motion, is come
Adjustment moving slide block (36) does reciprocating linear motion and its adjustment of position；
(3) by installing the movement crank (4) isometric with external gear pitch circle (12) radius is moved in moving crankshaft (8) output end,
Certain point on fantasy sport external gear (12) pitch circle ensures the teeth portion intensity of movement external gear (12), realizes movement external gear
(12) on pitch circle certain put movement locus be outside internal gear worm gear (14) horizontal diameter direction move along a straight line purpose；
(4) in the mechanism operational process moving slide block (36) without cross component force, so that moving slide block is in planar contact pair without side
It is moved to frictional resistance, improves service life and the stability of kinematic pair.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810280784.6A CN108331894B (en) | 2018-04-02 | 2018-04-02 | Linear motion mechanism with adjustable stroke and slope and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810280784.6A CN108331894B (en) | 2018-04-02 | 2018-04-02 | Linear motion mechanism with adjustable stroke and slope and control method thereof |
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| CN108331894B CN108331894B (en) | 2023-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911042A (en) * | 2021-10-11 | 2022-01-11 | 深圳市亚加电机有限公司 | Mobile device for camera and lifting motor mechanism |
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| CN108331894B (en) | 2023-12-22 |
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